Top US diplomat Marco Rubio says he does not have high expectations for peace talks due to be held between Ukraine and Russia in Turkey and asserted that Donald Trump and Russian President Vladimir Putin needed to meet. "It's my assessment that I don't think we're going to have a breakthrough here until President Trump and President Putin interact directly on this topic," he said, speaking after a meeting of Nato foreign ministers in southern Turkey. Earlier in the day, Trump - who is visiting the Middle East - also suggested that significant progress in peace talks was unlikely until...